package com.gxgeek.order.util;

import java.util.Random;

/**
 * Created by gx on 2017/7/12.
 */
public class KeyUtil {


    /**
     * 生成唯一主键
     * 格式 时间 + 随机数
     * @return
     */
    public static synchronized String genUniqueKey(){
        Random random = new Random();
        Integer number = random.nextInt(900000)+100000;
        return System.currentTimeMillis()+String.valueOf(number);
    }
}
